Objectives: To improve further the safety of ships, particularly tankers. Summary of provisions: The Protocol was adopted under the SOLAS Convention in the framework of the International Maritime Organisation (IMO). Regulations of Chapter I are amended to provide for, inter alia, inspections and surveys of ships and passenger ships, surveys of life-saving appliances and other equipment of cargo ships for the purpose of ensuring that they comply fully with the requirements of the Convention and the Protocol and, where applicable, the International Regulations for Preventing Collision at Sea in force, surveys of hull, machinery and equipment of cargo ships, including intermediate surveys of tankers of ten years of age and over, and maintenance of conditions after surveys. Regulations of Chapter II are amended to, inter alia, add definitions, apply regulations relating to machinery and electrical installations to tankers, and modify existing fire safety measures and cargo tank protection measures to include 'new tankers' as defined in the Protocol. Finally, Chapter V is amended to modify provisions relating to shipborne navigational equipment, use of the automatic pilot, operation of steering gear in areas where navigation demands special caution, and steering gear for testing and drilling.